undetermined countermarked Greek coin

Asia Minor?, , ? 323-310 BC.,
Æ 16 (15-16 mm / 3,46 g), bronze,
Obv.: ... , head wearing crested Attic helmet left; on helmet, circular countermark: head of a lion left.
Rev.: ... , ? (nearly plain by wear).
(a countermark usually seen on Alexander III bronzes 323-310 BC. of uncertain mint in western Asia Minor, cf: http://www.acsearch.info/record.html?id=362339 , http://www.acsearch.info/record.html?id=363068 , http://www.acsearch.info/record.html?id=227988 ) .